Compare and contrast provirus and retrovirus.

1 answer:

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Provirus - Is is a virus that has attached itself into the DNA of a host cell, while retrovirus is a virus that becomes a provirus. It usually happens when retrovirus invades a cell. According to study while the provirus is attached in to its host, it is not active.

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Diagnose: Mrs. Harris is a 60 year old white woman. She has noticed in recent years that her height has slightly decreased. Rece

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Answer:

Q: Which skeletal system disorder might she be suffering from?

A: Osteoporosis

Q: What techniques could be used to diagnose her condition?

A: Bone mineral density (BMD) test or dual energy X-ray absorptiometry (DXA) scan

Q: What treatments are available?

A: Medication, healthy food.

Explanation:

The vertebral discs between vertebrae could shrink with age. Therefore, a height loss up to 1-inch is normal. However, if the height loss is more then it is possibly due to osteoporosis.

A bone mineral density test, also known as dual energy X-ray absorptiometry scan, is a well-adapted test to measure the amount of calcium and other minerals in the bones. It uses X-rays to measure the content of calcium and thus strength of bones.

A person who is already suffering from osteoporosis should be treated with medicine right away so that it stops further deterioration of the bones and avoid any future bone fractures. Further, it can be handled by eating a healthy diet and supplements such as vitamins D. In case some of the bones/vertebrae are already fractured, surgical approaches might be necessary.

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Mutation causes change in an organisms DNA, resulting in a change in all aspects of the organisms life. It affects how the organism looks, and how it behaves. If there was no mutation, an organism could not change, therefore there wouldn't be evolution at all.

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Answer: Energy can not be lost, rather it can be converted into other forms of energy , so false.

Explanation:

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In which developmental stage are genetic malformations most likely to occur?

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The answer would be: A) First trimester

Genetic malformation should happen when the baby is forming its organs. Most of the organ is formed at the 3rd weeks of pregnancy which is part of the first trimester. If there is no malformation at this stage, it is less likely that any will develop at the later stage since it involve more growing and developing the current organ.

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Answer:

The pesticide measurements were the controlled variable

Explanation:

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